Page 143 - Nilam_Publication_module_Chemistry_Form.pdf

Chemistry Form 4 • MODULE

Insoluble salt Garam tak larut The salt is prepared by precipitation method. (Double decomposition Garam ini disediakan melalui kaedah pemendakan. (Tindak balas penguraian ganda Mix two solutions containing cations and anions of insoluble salts. Campur dua larutan yang mengandungi kation Rinse the residue with distilled water. Dry the residue by pressing it between Keringkan baki dengan menekankan antara

Method III / Kaedah III reaction) dua). – dan anion garam tak larut. Stir with glass rod. – Kacau dengan rod kaca. Filter using filter funnel. – Turas dengan corong turas. – Bilas baki dengan air suling. – filter papers. kertas turas.

PREPARATION OF SOLUBLE AND INSOLUBLE SALT / PENYEDIAAN GARAM LARUT DAN GARAM TAK LARUT
Preparation of salt / Penyediaan garam + Other than / Garam selain K + , Na + , NH 4 The salt is prepared by reacting acid with insoluble metal/metal oxide/ Garam ini disediakan melalui tindak balas antara asid dengan logam/oksida logam/ Salt + Hydrogen (Displacement reaction) Garam + Hidrogen (Tindak balas penyesaran) Salt + Water (Neutralisation Reaction) Garam + Air (Tindak balas Peneutralan) Salt + Water + Carbon Dioxide Garam + Air + Karbon dioksida Add metal/metal oxide/met

Garam disediakan berdasarkan keterlarutannya sebagaimana yang ditunjukkan pada carta aliran di bawah:

Salts are prepared based on their solubility as shown in the flow chart below:
Method II / Kaedah II

metal carbonate: karbonat logam yang tak larut: Acid + Metal – Asid + Logam Acid + Metal oxide – Asid + Oksida bes Acid + Metal carbonate – Asid + Karbonat logam – volume of the heated acid yang dihangatkan sehingga berlebihan. – logam yang berlebihan. – – – –

Soluble salt Garam larut

+ Salt + Water
Salts / Garam K + , Na + , NH 4 Method I / Kaedah I The salt is prepared by titration method of acid and alkali using an indicator. Garam ini disediakan melalui kaedah pentitratan di antara asid dan alkali dengan menggunakan penunjuk. (Neutralisation Reaction) Garam + Air (Tindak balas Peneutralan) A titration is conducted to determine the volume of acid needed to neutralise a fixed volume of an alkali with the aid of an indicator. Pentitratan dijalankan dengan

1 Acid + Alkali – Asid + Alkali – –

141
Nilam Publication Sdn. Bhd.

07-Chem F4 (3p).indd 141 12/9/2011 5:55:20 PM